#include <bits/stdc++.h>
using namespace std;

int main(int argc, char const *argv[])
{
    // 输入一个字符，放到变量c中
    char c;
    cin >> c;

    cout << "你输入的字符是: " << c << endl;

    // 输出三角形
    cout << "  " << c << endl;
    cout << " " << c << c << c << endl;
    cout << c << c << c << c << c << endl;

    return 0;
}
